hpdl
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<?php
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/*
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$Id: $
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osCommerce, Open Source E-Commerce Solutions
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http://www.oscommerce.com
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Copyright (c) 2007 osCommerce
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License v2 (1991)
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as published by the Free Software Foundation.
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*/
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/**
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* The osC_Session_database class stores the session data in the database
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*/
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class osC_Session_database extends osC_Session {
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/**
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* Constructor, loads the database based session storage handler
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*
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* @param string $name The name of the session
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* @access public
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*/
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public function __construct($name = null) {
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$this->setName($name);
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$this->_setCookieParameters();
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session_set_save_handler(array(&$this, '_custom_open'),
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array(&$this, '_custom_close'),
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array(&$this, '_custom_read'),
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array(&$this, '_custom_write'),
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array(&$this, '_custom_destroy'),
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array(&$this, '_custom_gc'));
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}
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/**
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* Opens the database based session storage handler
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*
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* @access protected
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*/
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protected function _custom_open() {
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return true;
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}
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/**
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* Closes the database based session storage handler
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*
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* @access protected
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*/
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protected function _custom_close() {
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return true;
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}
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/**
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* Read session data from the database based session storage handler
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*
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* @access protected
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*/
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protected function _custom_read($key) {
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global $osC_Database;
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$Qsession = $osC_Database->query('select value from :table_sessions where sesskey = :sesskey and expiry > :expiry limit 1');
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$Qsession->bindTable(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->bindRaw(':expiry', time());
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$Qsession->execute();
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if ( $Qsession->numberOfRows() === 1 ) {
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$value = $Qsession->value('value');
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$Qsession->freeResult();
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return $value;
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}
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return false;
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}
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/**
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* Writes session data to the database based session storage handler
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*
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* @access protected
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*/
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protected function _custom_write($key, $value) {
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global $osC_Database;
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if ( !$SESS_LIFE = (int)ini_get('session.gc_maxlifetime') ) {
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$SESS_LIFE = 1440;
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}
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$expiry = time() + $SESS_LIFE;
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$Qsession = $osC_Database->query('select sesskey from :table_sessions where sesskey = :sesskey limit 1');
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$Qsession->bindTable(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->execute();
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if ( $Qsession->numberOfRows() === 1 ) {
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$Qsession = $osC_Database->query('update :table_sessions set expiry = :expiry, value = :value where sesskey = :sesskey');
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} else {
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$Qsession = $osC_Database->query('insert into :table_sessions values (:sesskey, :expiry, :value)');
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}
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$Qsession->bindTable(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->bindValue(':expiry', $expiry);
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$Qsession->bindValue(':value', $value);
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$Qsession->execute();
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return ( $Qsession->affectedRows() === 1 );
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}
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/**
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* Deletes the session data from the database based session storage handler
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*
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* @access protected
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*/
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protected function _custom_destroy($key) {
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global $osC_Database;
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$Qsession = $osC_Database->query('delete from :table_sessions where sesskey = :sesskey');
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$Qsession->bindTable(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':sesskey', $key);
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$Qsession->execute();
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}
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/**
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* Garbage collector for the database based session storage handler
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*
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* @access protected
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*/
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protected function _custom_gc($maxlifetime) {
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global $osC_Database;
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$Qsession = $osC_Database->query('delete from :table_sessions where expiry < :expiry');
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$Qsession->bindTable(':table_sessions', TABLE_SESSIONS);
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$Qsession->bindValue(':expiry', time());
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$Qsession->execute();
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}
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/**
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* Deletes the session data from the database based session storage handler
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*
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* @access protected
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* @see _custom_destroy()
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*/
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protected function _delete() {
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}
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}
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?>
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